- (South Africa) A bush (Aspalanthus linearis) from which rooibos tea is made.
- Antioxidants are hot topics in the health news these days, and an herbal tea called rooibos (pronounced ROY-boss) is becoming popular partly because it is being marketed as a healthful beverage with high levels of antioxidants. The rooibos plant (Aspalathus linearis (Burm. f.) Dahlgren, Fabaceae) is a South African flowering shrub used to make a mild-tasting tea that has no caffeine, very little tannin, and significant amounts of polyphenol antioxidants. 
Compounds in Dutch normally always take the grammatical gender of the latter component ("bos"), which would be neuter in this case. Because the word was borrowed from Afrikaans which makes no use of grammatical genders, it took the masculine gender which is often the gender assigned to loan words.